In a surreal moment under a drizzling sky just south of Los Angeles earlier this month, a few dozen fans of the veteran rock act FireHouse sing along passionately during the group's performance of their 1995 power ballad, “I Live My Life For You.”...

As the sun set last Saturday, the man who put the Guns in Guns N' Roses took the stage at Irvine Meadows Amphitheatre, where dozens of his Sunset Strip peers congregated for the inaugural Hair Nation Festival. With the venue due to close next mont...